From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DCB15EC1122 for ; Mon, 23 Feb 2026 19:09:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 489F810E443; Mon, 23 Feb 2026 19:09:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.b="XdNsNsWv"; dkim=pass (2048-bit key; unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="VAmO40sF"; dkim-atps=neutral Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3314010E436 for ; Mon, 23 Feb 2026 19:09:39 +0000 (UTC) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 61NIAtgI322296 for ; Mon, 23 Feb 2026 19:09:38 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= S0JCApWIKIFxtoeFjcHtlOVvzzubuiNTLYafS3Jft1k=; b=XdNsNsWvxZaLB+WO 1c9je4mRHs9lemIwzNeVaBTfpwvKr7B0M6jAGIFkItnEmwzraStnPI+eLsvh+Xg1 9tqJOYWOtxI5zGygqqarte6g8YKv1SPyRAjTJDK/H1eUgLiAWwJbOlM+R5ZVO7Gu Zlidsi74Xn3WIUeJeLdS6qj+zGxJeuJaICoHVkiD27kVX2tzYfA0ZOwCh1kXu4+5 JXAy4aZ6r6X+Z6maQBc488mYwlT3XgqPa5XsPeu0Kvlf54tMIfsLd/itCow9x1rM D5dq7NJNCG/xoZz2ALOSMmFhUqbSS2og4rxeBOS6jyP69+IusIvhhoGOhRfkNw7B 1fcYwA== Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4cgn8y1m3v-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 23 Feb 2026 19:09:38 +0000 (GMT) Received: by mail-pl1-f199.google.com with SMTP id d9443c01a7336-2aad5fc5b2fso39177405ad.1 for ; Mon, 23 Feb 2026 11:09:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1771873777; x=1772478577; darn=lists.freedesktop.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=S0JCApWIKIFxtoeFjcHtlOVvzzubuiNTLYafS3Jft1k=; b=VAmO40sFpCwKAy2qPZgH0WRS4iCVSz94qWZYFvnKFxUjfCDdk9oGTMCCwzIH9zcqF7 vaOzBIesi3k9iAOl1uqdV83ocs9B1wmh0+GZL83ons93TzvYFXAod8+yXrItL/DLGAQz vwnx3iDzYfWKawfrdQ9yuwTHk/QupqaTZPN9PxXs1Um1XZJ+jiXUC3VQMkZwrqLG/MSK 8hUOdPuJSs2LxJGX6lfbMpZlne16hmtbSeMBIzEgtQMENCZLK/oWM6chPGEV0pL7ids+ 0t8VIGnFI5nh3Z1y0BR/4dVSw8fZw+a58XjQTnmJ6DRvNQJwvOKhxaZjCrBC5rw+mEaL Opxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771873777; x=1772478577; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=S0JCApWIKIFxtoeFjcHtlOVvzzubuiNTLYafS3Jft1k=; b=oL9dIJYaOvCylDyp8X+RHudOHb/9kz1l2gr5k4Dg2jPihMd9jpWo2mk+4xX1HvtA1k xEsu/RIjGwEiAoSsRVlfJUkQbOz9KXS7DDRx/dWphDMaZsti+CF9SLoHWFiGylW3GZ85 UjSfbFcrTolnKmwOqBNMrm1WGBcfmmJneHOA0nkQVgJdhSzHZFULsEjb1EohbYsrM5aV 9Sv4zqxD9UL2/6gu12WE8MvunO8zowMoHS1j01IGSFfaAHPwpw3G0IRGvhAuryIvudTP w4rLqEt0sid8Y95v4sj/P7fgEaw82ihaO7Olpqo/nIBsV4mQlh3khWcGgdRHVTzoXULE BGFg== X-Gm-Message-State: AOJu0YwOf5JsmEN0Gt8p706xQ1NrAcnb1Y+Em7s49Zg0GpD9cTToC5V+ oQiNYga5SBTiLlRVd2QLpSg9h28c9kKJtVDQnlpNUG+rxPh7sKYkF4XD2I1MUsNf3c9Md6cr8yw ghEVNXkOzjMzPQaE1TJz3Io1eoULb4uo5UeS0bVUS099WpH65rRu8cLtA5gg5+/JejlPtvu4= X-Gm-Gg: ATEYQzylhmwZab+S1S9dILO5B3D1kT42R7/F6tqlPTJC3015RWjEEugSoorE8Qv/aPB ZZIqJDmnCt8D6aviNFFkfUcjoZZ8hZtSYqBKz2sP904y5/tnUjIjNP0aDOb8qHfyS5RYdI0uIQq 0g+JwUF9b+ZWKeN8YPNXxJvKUz7as500HOdxo9SZjWoHxKsfSEHFb4fUyDpe8Zw0RV1X1CKc9jp aoVtK6ALx3xpiryZucY3qzu5Kh+Vr9/ax8DoJa/MbL9HCp9zLYcioZKht1hPLyvzryuoFbdJbLS kzA1s19WzKCBQoaKp3AJAq2nV89MkF6IydCHtccWAiReTRZK8KE2IRMv2wgb2aRzjf6GLDALqji OHv8/GgEFMpHMsHa8Y6P78cdufV1PLNP9t4mqs9/m90uUkAQ1h8Sm8Q== X-Received: by 2002:a17:902:ce0c:b0:2aa:dee9:dcf4 with SMTP id d9443c01a7336-2ad7447b9a3mr88580595ad.25.1771873776832; Mon, 23 Feb 2026 11:09:36 -0800 (PST) X-Received: by 2002:a17:902:ce0c:b0:2aa:dee9:dcf4 with SMTP id d9443c01a7336-2ad7447b9a3mr88580215ad.25.1771873776239; Mon, 23 Feb 2026 11:09:36 -0800 (PST) Received: from hu-ekangupt-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ad74e34e18sm83501505ad.10.2026.02.23.11.09.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Feb 2026 11:09:35 -0800 (PST) From: Ekansh Gupta Date: Tue, 24 Feb 2026 00:38:56 +0530 Subject: [PATCH RFC 02/18] accel/qda: Add Qualcomm DSP accelerator driver skeleton MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260224-qda-firstpost-v1-2-fe46a9c1a046@oss.qualcomm.com> References: <20260224-qda-firstpost-v1-0-fe46a9c1a046@oss.qualcomm.com> In-Reply-To: <20260224-qda-firstpost-v1-0-fe46a9c1a046@oss.qualcomm.com> To: Oded Gabbay , Jonathan Corbet , Shuah Khan , Joerg Roedel , Will Deacon , Robin Murphy , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, iommu@lists.linux.dev, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Srinivas Kandagatla , Dmitry Baryshkov , Bharath Kumar , Chenna Kesava Raju , Ekansh Gupta X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1771873753; l=4540; i=ekansh.gupta@oss.qualcomm.com; s=20260223; h=from:subject:message-id; bh=Iw0hzhN8TNwgA9xnHeYqChSsZ5/vTjuUaVZUYGjv0iQ=; b=6mfusuznwiKRoFz7lqPVV796aoLzrrTOSWeY7E+k/o91H+68GH9DCi4JNH+MgsD4WTZjhKMWZ rfXsJyoI0+sBQzXiPtXlgnu8MwGhwyzA7WTUYFVKS2pm+ZpHc4bQxcZ X-Developer-Key: i=ekansh.gupta@oss.qualcomm.com; a=ed25519; pk=n0SepARizye+pYjhjg1RA5J+Nq4+IJbyRcBybU+/ERQ= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjIzMDE2NiBTYWx0ZWRfX9hJ4c5n0E9PW WKbbgFtZgrVMBe5k2FZDBpHsD2zXLhfzbl4mOdPIV/Zk/NKh6IR2dT7hr1eqW/MgElM3vunBn9W MfHbJFO9rcjgpcOI/v9IGmpdRGiZf1TX3ETf6Bbf6ugymlCoP0OzczUCtMEJ2RDTa73/G0rmubB WGnhzYKOVnt+pnNTNYvac2zu9Mf6J6qQp+FExNCgibho5T/pLaAlp9XjqcQb24Nez+bRTPiwtPf 6mx2sFXM6GbDi2bqk5StH+A8OtZcKaHRYVYNEJs6Gv96X0Rl15QSPcQPVpT2fN+DOYx+sjx4YnM aY3nD1C/Qlv/5K3zE5Zvf8Q0h1BH6ee/sS1n3LDiUtmpYjHSuiU9lAL97MU5ruwejkEeZiXIju6 OX4ciTNjmXx9Ni7JquXHwI70hI/IUu2vrP2aQmsM3njw9BUsH11RLR11hvoQIxZQZQQYzkjqcwu nHZwq+8V832C3WSAJcQ== X-Authority-Analysis: v=2.4 cv=edYwvrEH c=1 sm=1 tr=0 ts=699ca5f2 cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=YXnACfkLeW4vfmpQHhcA:9 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: p2q8PA-hAPr7HS0nSGUsei8sBrO0D5_C X-Proofpoint-ORIG-GUID: p2q8PA-hAPr7HS0nSGUsei8sBrO0D5_C X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-23_04,2026-02-23_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 phishscore=0 clxscore=1015 priorityscore=1501 spamscore=0 impostorscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2602230166 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch introduces the initial scaffolding for the Qualcomm DSP accelerator (QDA) driver under drivers/accel/. The new Kconfig option DRM_ACCEL_QDA integrates the driver with the DRM/accel subsystem, and the accel Makefile is updated to build the driver as a loadable module. A minimal qda_drv.c file is added to provide basic module_init/module_exit hooks so that the driver can be built and loaded. Subsequent patches will add: - RPMSG-based communication with Qualcomm Hexagon DSPs - FastRPC integration for userspace offload - DMA-BUF support and memory management - GEM, PRIME and IOCTL interfaces for compute job submission This patch only wires up the basic driver framework and does not yet provide functional DSP offload capabilities. Signed-off-by: Ekansh Gupta --- drivers/accel/Kconfig | 1 + drivers/accel/Makefile | 1 + drivers/accel/qda/Kconfig | 29 +++++++++++++++++++++++++++++ drivers/accel/qda/Makefile | 8 ++++++++ drivers/accel/qda/qda_drv.c | 22 ++++++++++++++++++++++ 5 files changed, 61 insertions(+) diff --git a/drivers/accel/Kconfig b/drivers/accel/Kconfig index bdf48ccafcf2..74ac0f71bc9d 100644 --- a/drivers/accel/Kconfig +++ b/drivers/accel/Kconfig @@ -29,6 +29,7 @@ source "drivers/accel/ethosu/Kconfig" source "drivers/accel/habanalabs/Kconfig" source "drivers/accel/ivpu/Kconfig" source "drivers/accel/qaic/Kconfig" +source "drivers/accel/qda/Kconfig" source "drivers/accel/rocket/Kconfig" endif diff --git a/drivers/accel/Makefile b/drivers/accel/Makefile index 1d3a7251b950..58c08dd5f389 100644 --- a/drivers/accel/Makefile +++ b/drivers/accel/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_DRM_ACCEL_ARM_ETHOSU) += ethosu/ obj-$(CONFIG_DRM_ACCEL_HABANALABS) += habanalabs/ obj-$(CONFIG_DRM_ACCEL_IVPU) += ivpu/ obj-$(CONFIG_DRM_ACCEL_QAIC) += qaic/ +obj-$(CONFIG_DRM_ACCEL_QDA) += qda/ obj-$(CONFIG_DRM_ACCEL_ROCKET) += rocket/ \ No newline at end of file diff --git a/drivers/accel/qda/Kconfig b/drivers/accel/qda/Kconfig new file mode 100644 index 000000000000..3c78ff6189e0 --- /dev/null +++ b/drivers/accel/qda/Kconfig @@ -0,0 +1,29 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Qualcomm DSP accelerator driver +# + +config DRM_ACCEL_QDA + tristate "Qualcomm DSP accelerator" + depends on DRM_ACCEL + depends on ARCH_QCOM || COMPILE_TEST + help + Enables the DRM-based accelerator driver for Qualcomm's Hexagon DSPs. + This driver provides a standardized interface for offloading computational + tasks to the DSP, including audio processing, sensor offload, computer + vision, and AI inference workloads. + + The driver supports all DSP domains (ADSP, CDSP, SDSP, GDSP) and + implements the FastRPC protocol for communication between the application + processor and DSP. It integrates with the Linux kernel's Compute + Accelerators subsystem (drivers/accel/) and provides a modern alternative + to the legacy FastRPC driver found in drivers/misc/. + + Key features include DMA-BUF interoperability for seamless buffer sharing + with other multimedia subsystems, IOMMU-based memory isolation, and + standard DRM IOCTLs for device management and job submission. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called qda. diff --git a/drivers/accel/qda/Makefile b/drivers/accel/qda/Makefile new file mode 100644 index 000000000000..573711af1d28 --- /dev/null +++ b/drivers/accel/qda/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Makefile for Qualcomm DSP accelerator driver +# + +obj-$(CONFIG_DRM_ACCEL_QDA) := qda.o + +qda-y := qda_drv.o diff --git a/drivers/accel/qda/qda_drv.c b/drivers/accel/qda/qda_drv.c new file mode 100644 index 000000000000..18b0d3fb1598 --- /dev/null +++ b/drivers/accel/qda/qda_drv.c @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. +#include +#include + +static int __init qda_core_init(void) +{ + pr_info("QDA: driver initialization complete\n"); + return 0; +} + +static void __exit qda_core_exit(void) +{ + pr_info("QDA: driver exit complete\n"); +} + +module_init(qda_core_init); +module_exit(qda_core_exit); + +MODULE_AUTHOR("Qualcomm AI Infra Team"); +MODULE_DESCRIPTION("Qualcomm DSP Accelerator Driver"); +MODULE_LICENSE("GPL"); -- 2.34.1